t = ('czk', 'nan', 25)

for item in t:
    print(item)

# 取索引

print((t.index('nan')))

# 个数

print(len(t))

print(t.count('czk'))
# 元祖进行格式化
print('姓名是%s，性别是%s，年龄是%d' % t)
